APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF

3

Conversion of dc power input into dc power output

02

without intermediate conversion into ac

04

by static converters

10

using discharge tubes with control electrode or semiconductor devices with control electrode

125

using devices of a thyratron or thyristor type requiring extinguishing means

135

using semiconductor devices only

137

with automatic control of output voltage or current, e.g. switching regulators

142

including plural semiconductor devices as final control devices for a single load

H

ELECTRICITY

02

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

M

APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF

3

Conversion of dc power input into dc power output

02

without intermediate conversion into ac

04

by static converters

10

using discharge tubes with control electrode or semiconductor devices with control electrode

125

using devices of a thyratron or thyristor type requiring extinguishing means

135

using semiconductor devices only

137

with automatic control of output voltage or current, e.g. switching regulators